An object with a mass of 4kg is hanging from an axle with a radius of 14cm. If the wheel attached to the axle has a radius of 27cm, how much work would it take to turn the wheel 9cm?

1 Answer
Jun 9, 2017

The work is =1.83J

Explanation:

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The load L=(4g)N#

Radius of axle r=0.14m

Radius of wheel R=0.27m

Taking moments about the center of the axle

FR=Lr

F0.27=4g0.14

F=4g0.140.27=20.3N

The force is =20.3N

The distance is d=0.09m

The work is

W=Fd=20.30.09=1.83J